What do subcontractor estimating services include?
Subcontractor estimating services turn a bid package into priced quantities: a takeoff by CSI division with units and measurement rules, labor hours from crew rates and burden, material costs, and a scope letter noting exclusions. KNR delivers an Excel workbook, PDF summary and marked-up drawings, with the fee quoted after plan review.
Our Professional Subcontractor Estimating Services
A subcontractor estimate fails in two places: a quantity measured off the wrong scale, and a labor rate that never carried burden. Our subcontractor estimating services start from the plan sheet itself. We calibrate the drawing scale, set a measurement rule for every line, and keep the arithmetic visible so your estimator or project manager can audit any cell before the number reaches a bid form.
Every deliverable is an Excel workbook and a PDF summary with marked-up drawing pages. Each row carries a CSI MasterFormat division, a unit of measure, a waste factor where the trade needs one, and a source note. The same workbook structure supports our subcontractor takeoff services on single-trade packages and full multitrade scopes.
Trade-specific quantity takeoffs
We measure what you install, not what the building contains. Division 26 raceway is taken off in linear feet by conduit size with a separate count of boxes, fittings and panels; Division 09 gypsum board is measured in square feet of wall and ceiling face, then converted to sheets with a stated waste allowance. Division 23 ductwork is taken off by gauge and perimeter class in pounds and square feet of insulation. Each count line is a separate quantity so your purchasing list matches the takeoff.
Labor hours built from unit rates
Labor is built from labor hours per unit, not a percentage of material. A line reads: quantity × labor hours per unit = total hours, then total hours × crew rate including burden. Burden covers payroll taxes, insurance and fringe, and it is shown as its own column so you can swap in your company rate. Prevailing wage projects get a separate rate set. Our labor cost estimating services page explains how the hours are sourced and reviewed.
Bid forms with alternates and scope
The final workbook rolls material, labor, equipment and subcontract tiers into a bid form you can transpose directly. Alternates and unit prices sit on their own tab, and the scope letter lists inclusions, exclusions and assumptions so a general contractor's leveling sheet lines up line for line. The fee is quoted per project after we review the plans. To start, upload your drawing set with the specification sections and any addenda.
What Is Included in Our Subcontractor Estimates?
An estimate is only as good as its structure. We build each subcontractor bid estimating workbook so that a reviewer can trace a total back to a plan sheet in three steps: line item, measurement rule, source. The bid package you send determines the divisions we open; addenda are logged and dated so no revision is silently dropped. If you are assembling the package yourself, our walkthrough on how to estimate a construction bid covers the order of operations before you hand off plans.
Scope items by specification section
We read the specification sections before the drawings, because they decide what belongs in your bid package. Division 03 concrete, Division 09 finishes, Division 23 mechanical and Division 26 electrical each get their own summary sheet, with general conditions, permits, testing and temporary work listed separately as inclusions or exclusions. Anything the documents leave ambiguous goes into a request for information list rather than a guess. This is the part of our subcontractor estimating services that most often changes a bid before submission.
Quantities in the units your trade buys
Quantities are measured in the unit the supplier or crew actually uses. Concrete is cubic yards; formwork is square feet of contact area; masonry is square feet of wall face; rebar is tons by bar size; drywall is sheets and square feet; conduit is linear feet by trade size; fixtures are each count. Waste factors are stated per line and marked as typical, so you can override them with your own history.
Materials, labor, equipment and cost breakdowns
The cost columns stay separated so you can see where the money sits:
- Material: quantity × unit price, extended, with tax treatment noted.
- Labor: labor hours × crew rate, with burden shown as a percentage and a dollar amount.
- Equipment: owned or rented, with the rate basis stated.
- Subcontract tiers: specialty items you pass through, listed at the quoted value.
- Summary: cost per square feet of floor area for early comparison against your own benchmarks.
Material pricing is adjusted with published Producer Price Index movement for the commodity involved and reviewed by an estimator before release. Our bid estimating services page covers how alternates and unit prices are carried.
Who Needs Our Subcontractor Estimating Services?
Most of our work comes from firms that already know their trade and need the arithmetic done faster than an owner can do it between site visits. The subcontractor estimating services we deliver are built for that audience: a plan set in, a traceable workbook out. See the range of clients on our who we serve page, or submit a plan set for review.
Specialty trade subcontractors
Electrical, mechanical, concrete, framing, drywall and sitework subcontractors use a sub bid quantity takeoff when two or three packages land in the same week. You get counts and lengths you can price against your own crew rates, plus a labor hours column you can replace with your history. Firms that price from a tablet or a plan swift-style takeoff tool can import the quantities and keep their own assembly rates.
General contractors and home builders
General contractors use our numbers to check sub bids before award, and to spot a package that came in low because an addendum was missed. Builders pricing a repeat plan use the same workbook as a budget baseline, with burden and general conditions carried separately from trade cost. Our general contractor estimating page covers the leveling view.
Developers, architects and suppliers
Developers compare trade packages across a program of similar buildings; architects use trade quantities to test a design against a budget before drawings are complete; suppliers use cubic yards, square feet and each counts to size a quote. Each group gets the same measurement rules and source notes. Our developer and owner estimating page shows how the packages roll up.
Types of Subcontractor Projects We Estimate
The measurement rules do not change with building type, but the scope boundaries do. We organize every project by CSI MasterFormat division and note which divisions the trade package actually covers, so a bid never carries work another subcontractor owns. Our subcontractor estimating services follow the same structure across all three project types below, and the construction estimating services overview explains how the divisions are assigned.
Residential projects
Single-family and multifamily work is driven by repeatable units: each count of fixtures, receptacles, doors and windows, with a per-unit multiplier and a waste factor for cutoffs. General conditions are thin, and the plan set is often a permit drawing with limited detail, so assumptions are listed explicitly. Our home builder estimating services page covers the per-unit approach.
Commercial buildings
Commercial scopes add system coordination: Division 23 and Division 26 routing, Division 09 rated assemblies, and Division 03 slabs with embeds. General conditions, temporary power and firestopping need explicit inclusion or exclusion. A commercial construction estimate built on the same rules lets you compare tenant fit-out against core and shell.
Industrial and infrastructure projects
Industrial and civil work shifts the units: cubic yards of excavation and concrete, tons of structural steel, linear feet of pipe by diameter and schedule. Specification sections run longer, submittals and testing multiply, and escalation matters more because the schedule is long. Unit price schedules and alternates are carried as separate lines so the owner's form can be filled without rework, and our subcontractor estimating services keep those lines traceable to the plan sheet they came from.
Our Subcontractor Estimating Process
A subcontractor estimate is only as good as the order in which it is built. We work from the bid documents outward: plans first, then specifications, then the arithmetic, then the review. Each step below names what we check before the next one starts.
The same sequence applies to electrical subcontractor estimating on Division 26 packages and to a concrete or drywall package, because the failure modes are shared: a missed addendum, a misread scale, a scope item assumed to sit with another trade. That is the discipline behind our subcontractor estimating services, and it holds whether the package is a single trade or a multitrade buyout.
Submit drawings and specifications
Send the complete bid package: plan sheets, specification sections, the bid form, and every addendum issued to date. We log the addendum numbers and dates so the estimate is tied to a single document set, and we flag any sheet listed in the index but not received. If the scope letter from the prime lists inclusions or exclusions, send that too, since it defines what your number must cover.
Plan review and digital takeoff
We calibrate each sheet to its stated scale and check the calibration against a known dimension before measuring anything. Quantities are then taken by unit of measure — linear feet for pipe and conduit, square feet for membrane and ceiling, cubic yards for concrete, each count for fixtures and devices — with the measurement rule written beside each line. AACE estimate class is recorded at the top of the workbook so the reader knows how much design detail the numbers rest on.
Cost calculation, quality checks and delivery
Labor hours are built from the takeoff quantity and a crew rate, then burden is added at the stated percentage. A second estimator re-adds extensions and checks that every line carries a unit, a quantity rule, and a source. You receive the Excel workbook, a PDF summary, and the marked-up plan sheets, so any number can be traced back to a sheet and a measurement. To start, upload your bid documents.
Sample Subcontractor Estimate and Deliverables
The example below is illustrative only. It shows how a mechanical subcontractor takeoff on Division 23 converts measured quantities into an extended cost, and how the assumptions sit next to the arithmetic rather than in a separate narrative. It is the same structure our subcontractor estimating services use on every trade package, from Division 03 concrete to Division 26 electrical.
Assumptions for the illustrative case: a single-story tenant fit-out, 1,200 linear feet of 2-inch Schedule 40 steel pipe measured on the plan sheets, a 5% waste factor on pipe, and a labor productivity of 0.6 labor hours per linear foot at a crew rate including burden. Pipe quantity with waste is 1,200 × 1.05 = 1,260 linear feet. Labor hours are 1,260 × 0.6 = 756 hours, and labor cost is 756 hours multiplied by the crew rate shown in the table.
The unit costs in the table are illustrative ranges, not market prices. When a bid form asks for a lump sum plus alternates, the same line items are regrouped under the base bid and each alternate so the prime can map your number to their form during bid leveling. A parametric estimate is offered only when the drawings are too early for measured quantities, and it is labeled as such.
| Item | Qty | Unit | Unit cost range | Extended range |
|---|---|---|---|---|
| 2" Schedule 40 steel pipe, material (incl. 5% waste) | 1,260 | LF | $9.00 – $12.00 | $11,340.00 – $15,120.00 |
| Pipe labor (0.6 hr/LF at crew rate incl. burden) | 756 | hr | Crew rate | 756 hr × crew rate |
| Pipe insulation, material and labor | 1,200 | LF | $4.50 – $6.00 | $5,400.00 – $7,200.00 |
| Hangers and supports | 1 | LS | $3,800.00 – $5,200.00 | $3,800.00 – $5,200.00 |
| Valves and specialties | 24 | EA | $180.00 – $260.00 | $4,320.00 – $6,240.00 |
| Testing, balancing and commissioning allowance | 1 | LS | $2,500.00 – $4,000.00 | $2,500.00 – $4,000.00 |
| Total (illustrative, excluding labor line) | — | — | — | $27,360.00 – $37,760.00 plus 756 hr × crew rate |
Excel quantity takeoff sheet
One row per item, with columns for CSI MasterFormat division, specification section, description, quantity, unit of measure, measurement rule, waste factor, and source sheet. Formulas stay visible so you can audit an extension or swap a unit cost without rebuilding the sheet.
Marked-up drawings
The plan sheets returned with color-coded highlights and quantity tags at each measured run or area. A reviewer can open the PDF, find a tag, and match it to a row in the workbook without calling us.
Itemized cost estimate
Material, labor hours, crew rate, burden, equipment and subcontract pass-throughs are shown as separate lines, followed by general conditions and markup. The PDF summary repeats the totals and lists every assumption, exclusion and open RFI item.
Software and Pricing Data We Use
Two things drive the credibility of a subcontractor material takeoff: how the quantities were measured and where the prices came from. Both are documented in the workbook, so a reviewer can challenge either one.
Material movement matters on long-lead trades. The chart below tracks the Producer Price Index series for the materials in this scope, rebased to 100, so you can see direction and timing rather than a single snapshot.
Takeoff and estimating software
We work in three tool categories: PDF and on-screen takeoff for measuring plan sheets, spreadsheet estimating for the line-item build and formulas, and subscription cost databases for unit-cost starting points. Each measurement carries the sheet number and the scale used, so a revised sheet can be re-measured without redoing the whole package. Where a Division 09 finish schedule changes by addendum, only the affected rows are re-taken.
Regional material and labor pricing method
Unit costs start from national averages, then adjust for location, prevailing wage requirements and project conditions such as occupied-space work or restricted access. Labor rates are checked against the wage table below, which shows BLS occupational medians by trade. Material escalation is applied where the chart below shows sustained movement in a commodity the scope depends on, and the adjustment is shown as its own line so it can be removed during bid leveling.
Material price movement, Oct 2023 to Sep 2026
| Occupation | 25th percentile | Median | 75th percentile |
|---|---|---|---|
| Construction laborers | $18.57 | $22.66 | $28.72 |
| Carpenters | $23.32 | $29.12 | $36.94 |
| Electricians | $23.76 | $30.38 | $40.36 |
| Plumbers, pipefitters and steamfitters | $24.13 | $30.67 | $40.92 |
| Cement masons and concrete finishers | $22.60 | $27.41 | $32.15 |
| First-line supervisors, construction trades | $30.48 | $38.42 | $48.78 |
| Cost estimators | $29.40 | $37.86 | $48.97 |
Base wages before payroll taxes, insurance and benefits. Source: BLS Occupational Employment and Wage Statistics, national, all industries.
Why Contractors Choose Our Estimating Services
The reasons are procedural, not promotional. A number you cannot trace is a number you cannot defend in a scope meeting, and that is the standard we build to on every package.
Trade-specific expertise
Concrete is measured by cubic yards with formwork by contact area, not by slab square footage alone, and Division 03 line items reflect that. Each specification section is read for what it puts in your scope, including alternates and unit-price items the prime may exercise later. That reading is what makes sub bid leveling support possible, because your number can be compared line by line against another bidder's.
Quality control and clear assumptions
Every line carries a unit, a measurement rule and a source sheet, and a second estimator re-checks extensions before delivery. Assumptions, exclusions and open RFI items are listed in the summary rather than buried in a note. If a quantity rests on a design assumption, the workbook says so.
Turnaround, communication and revisions
Delivery dates are agreed when we review the package, based on sheet count, number of trades and how complete the documents are. Revisions are handled against a new addendum or drawing set, with changed rows flagged so you can see what moved. Questions during review go to one estimator who owns the package. Send your drawing set to start.
Subcontractor Estimating Services Pricing
We quote a fixed fee per project after an estimator has reviewed the plan sheets, the specification sections and every addendum in the bid package. The fee follows the work, not a rate card: a Division 26 package with 40 sheets of branch circuits prices differently from a Division 09 set with a dozen finish schedules. No price is published here because the scope of each bid package decides it; send the documents and we return a written quote.
Where a bid package carries alternates or unit-price schedules, we price each item separately so you can see the exposure before you submit. Multitrade subcontractor estimating is quoted as one engagement when the trades share a drawing set, which avoids paying twice for the same architectural backgrounds.
Use the calculator below to convert a base wage and burden into a loaded crew rate before you compare our fee against the labor value of the package.
How quotes are calculated
We count the sheets in the package, sort them by CSI MasterFormat division, and note which trades take off from each one. The quote reflects the number of measurable line items, the number of specification sections to be read against them, and whether alternates or addenda require a second pass.
A single-trade package with clean architectural backgrounds is the lightest case. A multitrade package where Division 23 and Division 26 both draw from the same reflected ceiling plans is heavier, because each trade needs its own unit of measure and its own scale calibration on the same sheet.
We do not quote from a phone description of the job. The fee is set from the documents themselves, and the deliverable lists every quantity with the plan sheet and detail reference it came from.
What affects price and delivery time
Four things move the number: sheet count and legibility, the number of trades, the presence of alternates and unit-price schedules, and whether addenda arrive after the takeoff has started. A scanned set at an inconsistent scale costs more to measure than a vector PDF, because every sheet needs scale calibration against a known dimension.
The calculator below returns a loaded rate, a blended rate with overtime, labor hours and crew labor cost from base wage, burden percentage, share of hours at overtime, crew size and hours. Run your own crew figures through it to see what a day of field labor is worth on the package before you decide how much of the takeoff to send out.
We do not state a delivery time on this page. The schedule is agreed in the quote, and rush handling is confirmed case by case, never assumed.
Loaded labor rate calculator
- Loaded rate
- $31/hr
- Blended with overtime
- $32/hr
- Labor hours
- 320
- Crew labor cost
- $10,279
Burden covers payroll taxes, workers’ compensation, insurance and benefits; it varies by state, trade and company. Overtime is priced at time and a half.
Subcontractor Estimating Services Across the US
One estimating team covers all U.S. states, and the pricing data behind each takeoff is adjusted to the project location rather than to a national average left unadjusted. Wage levels differ by market, and public work adds prevailing wage requirements that change the labor half of every line item. A subcontractor estimate review that ignores the wage basis is only half a review.
Material delivery changes the picture too. Material escalation on lumber, ready-mix, steel and copper wire moves at different rates, and the chart data on this site shows those Producer Price Index movements as they refresh. We apply the published change to the material portion of the estimate and show the basis in the workbook.
Climate and code editions shift scope between regions: frost depth drives Division 03 footing quantities in cold markets, wind and seismic provisions change anchoring and bracing counts, and local amendments to the IBC or IRC change what the drawings must show. Confirm the adopted code edition with the local building department before the bid is finalized.
Every takeoff carries a stated waste factor and a scale calibration note per sheet, so a reviewer in another state can check the arithmetic without calling us.
Frequently Asked Questions
How much does a subcontractor estimate cost?
The fee is quoted per project after we review the plans. It depends on sheet count and drawing quality, the number of CSI MasterFormat divisions in the bid package, how many alternates and unit-price schedules the bid form requires, and whether you need a scope letter or bid leveling backup. Send the package and we return a fixed quote before any takeoff work starts.
How long does a subcontractor takeoff take?
The delivery date is set by the bid deadline, package size, and how quickly addenda and RFI answers arrive. We confirm the date in the written quote, so you know it before work begins. Large multitrade packages with Division 26 and Division 23 drawings take longer than a single-division interior package, and incomplete sheets push the date out.
Do you estimate labor and material costs?
Yes. Each line carries a quantity, unit of measure, material unit cost, labor hours per unit, crew rate, and burden. Labor rates are built from published U.S. Bureau of Labor Statistics wage data by trade and adjusted for your state, then reviewed by an estimator. Material pricing follows published producer price index movement for the commodity behind the line.
What drawings do you need?
Send the full bid package: architectural, structural, and MEP plan sheets, the specification sections, the bid form, all addenda, and any alternates list. A scope letter or prior estimate helps us match your format. If a sheet is missing or a scale is not stated, we issue an RFI rather than assume, and the gap is noted in the deliverable.
Can you use my estimate template?
Send your template with the plans and we confirm whether the estimate can be delivered in it. Most Excel workbooks with your own cost codes, division breakdown, and summary tabs can be matched. If your template needs formulas or linked tabs we cannot reproduce, we say so in the quote and propose the closest workable layout.
Do you sign NDAs?
You can request an NDA before sending drawings, and the terms are agreed before plan review begins. Send the document with your first message so it is executed ahead of any file transfer. We do not publish a standard NDA policy, so the terms come from your document or a mutually agreed version.
Do you provide sub bid leveling support?
Yes. Send the competing bids with the plans and we compare them line by line against the takeoff: quantities, unit of measure, inclusions, exclusions, alternates, and unit prices. The output is a comparison sheet that flags scope gaps and quantity differences, so you can see which number is low because of a real price and which is low because something was left out.
Can you handle multitrade subcontractor estimating?
Yes. One package can cover Division 03 concrete, Division 09 finishes, Division 23 mechanical, and Division 26 electrical, each taken off on its own sheet with its own units and waste factors. Multitrade packages are useful when a prime bid needs several scopes priced together. We keep the divisions separate so each trade's bid form can be filled independently.
Do you do electrical subcontractor estimating?
Yes. Division 26 takeoffs count devices, fixtures, feeders, and branch circuits by each, linear feet, and home runs, with conduit and conductor quantities tied to the plan sheet and panel schedule. Copper wire and cable pricing is the volatile line in these estimates, so we note the index date behind the material cost and flag escalation separately.
Do you do mechanical subcontractor takeoffs?
Yes. Division 23 takeoffs measure ductwork by weight and square feet of sheet metal, pipe by linear feet and diameter, and equipment by each count against the schedule. Fittings, hangers, insulation, and test-and-balance allowances are listed as separate lines so you can see what is included rather than assuming it.
What is a sub bid quantity takeoff?
It is the measured quantity list behind a trade bid: every item counted or measured from the plan sheets, priced with a unit of measure, waste factor, labor hours, and crew rate. It is the evidence for the lump sum you submit. Our subcontractor estimating services deliver that takeoff as a workbook with the arithmetic visible on each line, plus marked-up drawing pages showing where each quantity came from.
How do you handle alternates and unit prices on a bid form?
Alternates are taken off separately from the base scope so the base bid stays clean, and each alternate gets its own quantity and price line. Unit prices are quoted per the unit the bid form names, such as per square foot or per linear foot, with the measurement rule stated. Addenda received after the takeoff starts are logged and applied to the affected lines.
What estimate class can you deliver?
Most bid-stage work falls in AACE Class 3 or Class 2, where drawings are defined enough to measure quantities and price them by unit. If you only have a program and square footage, we can produce a parametric estimate and label it as such, with the assumptions listed. The class is stated on the summary so you know how much detail sits behind the number.